Based on Lyon's hypothesis, what will be the number of Barr bodies found in a human female suffering from Down's syndrome [AIEEE 2004]
A) 0
B) 1
C) 2
D) 3
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Number of barr bodies =x chromosome - 1
So In downs syndrome is a 21 chromosomal abnormality not linked with x or sex chromosomes
In this female have two x chromosome
According to formula 2-1=1
Therefore answer is option b
So In downs syndrome is a 21 chromosomal abnormality not linked with x or sex chromosomes
In this female have two x chromosome
According to formula 2-1=1
Therefore answer is option b
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